Pump ok the like



PUMP OR THE LIKE Filed April 2.9126- Sheets-Sheet 1 w 1,514,733 0. c. HUFNAGLE PUMP OR THE LIKE Filed April 16, 1 926 2 Sheets-Sheet 2 Patented Jan. 18, 1927.

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QLIVER C. HUFNAG-LE, OF DAYTON, OHEO, ASSIG-NGR TO THE DAYTON PUMP 6r, MANU- FACT'UEING COMPANY, QF DAYTON, 91-110.

PUMP OR THE LIKE.

Application filed April 16, 1926. Serial No. 102.574..

' This invention relates to pumps, having particular reference to improvements in suction pumps for domestic water systems.

The objects attained in the improvements consist in structural features which tend to simplify the construct-ion and reduce manufacturing costs, improve the operation of the pump, making it more effective with lower maintenance costs, the assembled units of the mechanism being designed for ready accessibility of the parts for adjusting the interior mechanism and replacing parts that become worn, etc. i

An outstanding feature of the pump consists in its symmetrical design and grouping of the different units of the mechanism which serve to effect a well balanced compact structure which'has relatively large capacity the size of the pump being considered;

The pump in its general features is of well known construction, the invention relating to refinements of the mechanism which result in substantial structural and functional improvements. 7

In the accompanying drawings:

Fi 1 is a view of the pump in side elevation partly in section;

Fig. 2 is a view in rear elevation partly in section;

Fig. 3 is a detail view of the discharge connections;

Figs. l and 5 are sectional views through the pump suction chambers and the discharge or flow chamber.

As here shown the pump comprises an integral frame structure 1 including the crank case cylinder 2, drainsump 3 and suction housing 4. r

Power for operating the pump is supplied from a motor 5 connected to a drive pulley 6 on the crank shaft 7 by a belt 8. By mounting the motor on a vertically adjustable base 5 simple and highly efiective means are provided for keeping the motor belt properly taut. The piston rod crosshead 9 is connected to the crank shaft by a pitman arm 10., The opposite end of the piston rod 11 has a piston 12 secured thereto coasting with the suction cylinder 13. The piston rod opening to cylinder 18 is closed with a combination packing nut 14 of well known construction and the opening to the cross head cylinder 2 with a common nut 15. An important refinement of the piston rod connection between cylinders 2 and 13 consists in a battle disc loarranged telescopically on the rod and movable with the rod between nuts-1 l-'15, the baiiie acting to prevent moisture from the water chamber following the rod by seepage and capillary actioninto the crank casing. Any water following the piston rod will be caused to drip from the baffle into the drain sump 3, this simple arrangement being effective to maintain lubrication and operation ofthe mechanism "in the crank casing in normal conditionindefinitely by excluding the moisture.

Themovement of the water through the pump is as follows: The supply line (not shown) is connected as at i? to an intake vacuum chamber-18 passing to the suction chamber 19 through a pipe :20, a screen 21 being interposed in the bottom of chamber 18 to-exclude foreign matter in the water, a drain plug 22 adjacent the screen serving to afford convenient access to the screen.

The movement of the water from the suction chamber is alternately through oppositely disposed'valves 23-424, as best shown in Fig. 4, into opposite alternately acting suction and pressure chambers 2526, each of the chambers 25-26 communicating by means of a constantly open port 27-28 with cylinder head suction and pressure chambers 293() arranged at the opposite ends of cylinder 13. On the forward stroke of the piston, away from the crank case, the intake of water will be through suction chamber 19,- valve 28 into chamber 25, through port 27 into chamber 29, the dischar e from the pump on the forward stroke of the piston being through chamber 30, port 28', chamber 26, valve 32 into a flow chamber 33 and thence through a port at into a pipe connection 35 (see detail Fig. 3) to the service line (not shown). The movement of the water through the suction and pressure chambers and valves coacting with the opposite ends of the cylinder is the same being alternated one with the otherwhen water is being drawn in by suction at one end of the cylinder water is being discharged by pressure at the other end of the cylinder. An air pressure tank 86 supported on the flow chamber 38, as here shown, acts in a well known manner to maintain uniformity of flow of the water discharged.

An important improvement comprised in the inventionrelates tothe details, of con struct ionandmanner' of assembhg theparts Which makeup the discharge unitof the pump as a Whole. As illustrated in the drawings the integral cylinder housing: b-i-S a r ranged at the'top to t'o rrn a cover for the cylinder chamber and a base 87 forthe suc;

ionand pressure chambers -26,the saihe being an integral housing 38, open,at. top

and bottom, and adapted to resft'ititlhits" lower face flush on basefj'i, the valves 2 3- 24 being seated in and risingabove base 37 as shovqn in theseveral figures. ,v s he housing 38 together with'the flow chan iber housing 39 is secnred to base 37 by means. of bolts 40, housingf3,9 being flanged .as at '41 at its baseto receive the bolts, the lower ends of the bolts being threaded into blind apertures, 42; in base 37 By this arrangement only a minimum out parts are required for the assembly, the'bolts except the bolt heads, being enclosed in internal raised'portions 45 of the housing 38 and an excellent construction obtained, a particular point of advantage consisting in the convenient and full accessibility afforded I rounding the opening in the tanloto the chamber, the flange being direct connected to the threadedend of the-housing,=thns serv ing to; eliminate the usual and less desirable pipe connection to the tank,

The entire unit of assembly comprisedin the discharge end ofthe pump is designed for low cost production, convenient acces sibility of parts, low maintenance and, with all,exc ellent design for appearance;

A further improvement ojf'the pump which has marked influence on the per for nance of the pump, consists in means provided in the conn ection 35 for maintaining greater unitormity of pressure in, tanlz tfi and thus 'to ottect a more even discharge of Water. The

means for accomplisliing this highly desirablevresult cons st 111.311 accurately d men sioned choker 44 disposed 1n the discharge a suction chamber, afval v e basefin improvement in the through said port.

port which acts to restrict the flow of Water through the port to th'e'per niniite delivery 7 capacity of the pump. Thus wvhen' the pump is operati normal uniform head pressure will be maintained in the pressure tank and the p'ump'W'ill diseharge an even flow of water w thout the ob ect1onable fluctuations "Wluclr'aie common in lb'ed' my invention, I claim:

1, A pun ipincludingrin combination with 4&- 7 nah i. a r M; .v V ber, detachable) valve housing compr sing a series of. vert cally extended, a-pertured portions projecting. inwardly from thewall of the housing; a detachable flow chamber housinghaying" apertured flange supportcd on thevalv e housing in register vi ith said ap ert ure d a portions thereof; aiseries o bolts est-ended thtdugh and flange a d apertured portions for securing said housings" thevalvehase I i i A pump including iii coinbinatioii w'ith a suction chamber a. valv said 7 cham er, haviiigsagpiura'1i threaded apeitiires suitab ranged there'- in, a detachable valve ho s iiig, six ported on said base; a" detachable new" cham er lflaiiged dirtiwartdly atjits base and. pgartedpauie valve housing, a plurality of bolts extended through "the flange of the flpW eham "e i and having. their opposite endsfthl'ze aded ,into said aperturesof the val ve base fei fisup drt egeiide i h re t-tea an th r; a air pressure tank supported on the, flow enam her, a threaded ring flange fi xed tothe iii-es:

sure tankraiiound the opening betvveen the tank and flow chamber coactingl fivith the opentthreaded end. off-the tl ovv chamber r61- sealing the tank vvith thehousing.

arid a pressure tank arranged tamer one under pressure 'the -puin p and a discharge port coacting 'f xvith the. floiv cha'rnber including v a choker of predetermined diinen sions fixedii n saidport tonijegulatingthe pressure in .said ank re'strictiii the 'floiv In testimony heeof, gm isi zjnatiirei ba e c qv rin wariant,

3. A';pump compr sing, a flow chamber 

